220001422 has 4 divisors (see below), whose sum is σ = 330002136. Its totient is φ = 110000710.

The previous prime is 220001393. The next prime is 220001423. The reversal of 220001422 is 224100022.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55000354 + ... + 55000357.

It is an arithmetic number, because the mean of its divisors is an integer number (82500534).

Almost surely, 2^220001422 is an apocalyptic number.

220001422 is a deficient number, since it is larger than the sum of its proper divisors (110000714).

220001422 is a wasteful number, since it uses less digits than its factorization.

220001422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110000713.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 220001422 is about 14832.4449097241. Note that the first 3 decimals coincide. The cubic root of 220001422 is about 603.6823743353.

Adding to 220001422 its reverse (224100022), we get a palindrome (444101444).

The spelling of 220001422 in words is "two hundred twenty million, one thousand, four hundred twenty-two".